If 36.44 ml of a 0.01652 M KMnO4
solution are required to completely oxidize 25.000 ml of a
H2O2 solution,
calculate the molarity of the
H2O2 solution.
The equation of the reaction is as follows:
2MnO4- +
5H2O2 +
6H+ à5O2
+ 2Mn2+ +
8H2O
1) Calculate no. of moles of MnO4- used.
2) Apply stoichiometry from the balanced redox equation to
determine no. of moles of H2O2 oxidized.
3) Calculate molarity using the formula :
Molarity (mol/dm3) = No of Moles (mol) / Volume of Solution
(dm3).